Fracture toughness of as-cast freight bogie solebars after volume–surface quenching


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Abstract

The fracture toughness of freight bogie solebars made of low-carbon 20GFL steel is studied in the normalized state and after volume–surface quenching (VSQ). The fracture strength is estimated using acoustic emission and the critical J integral. VSQ is shown to increase Jc of the solebar material by a factor of ≈1.5, and its static strength is higher than that after normalization by ≈1.7 times.

About the authors

V. A. Belov

National University of Science and Technology MISiS

Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049

A. V. Nikitin

National University of Science and Technology MISiS

Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049

V. I. Anikeenko

National University of Science and Technology MISiS

Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049

A. A. Armizonov

OOO MIIT Inzhiniring

Email: csaap@mail.ru
Russian Federation, Moscow, 127055

S. O. Rogachev

National University of Science and Technology MISiS

Author for correspondence.
Email: csaap@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049


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